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- Home /
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- Wood Filler and Grain Filler /
- RotFix Wood Restoration and Repair
Overview
Rot Fix is an easy to use, low viscosity epoxy wood sealer, primer, and consolidant for repair and restoration of rotted, deteriorated, dried out or spongy wood. It creates a strong, water-resistant base for repair and restoration, suitable for both interior and exterior use. Use Rot Fix to penetrate deep into deteriorated and rotted wood creating a strong, solid base for restoration. After Rot Fix application, a patch may be built up with SculpWood.
What's included
(1) 16-oz. bottle of epoxy
(1) 8-oz. bottle of hardener
(1) 8-oz Mixing/Applicator Bottle
(1) 8-oz. bottle of hardener
(1) 8-oz Mixing/Applicator Bottle
Technical Details
- Brand: System Three
- Manufacturer Part Number: 1500K40
- Weight (lbs): 2.1000
Technical Downloads
Related Articles
Frequently Bought Together
Questions and Answers
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Browse 8 questions
Browse 8 questions
and 25 answers
Why did you choose this?
Rockler Store
Works great, very flowing. Soaks into the dry rot really well. Just pour several light coats and let it soak in. Be sure to dam up the area with painters tape if the rot goes all the way through or you'll have some drip out.
Damon P
on Aug 6, 2017
Thought we might be able to repair something that ended up needing replacement.
KIM S
on Dec 8, 2015
Works great, very flowing. Soaks into the dry rot really well. Just pour several light coats and let it soak in. Be sure to dam up the area with painters tape if the rot goes all the way through or you'll have some drip out.
Damon P
on Aug 6, 2017
Bought one kit, and it works just as the box says. Very pleased with the product. I can repair all my windowsills now.
Lisa Joan H
on Jul 29, 2016
Thought we might be able to repair something that ended up needing replacement.
KIM S
on Dec 8, 2015
Bought one kit, and it works just as the box says. Very pleased with the product. I can repair all my windowsills now.
Lisa Joan H
on Jul 29, 2016
My wood floor planks of my balcony were joined by a wood filler that is coming out with the sun and rain . Can I use this product to repair the slits?
Sydney C
on Jan 18, 2017
BEST ANSWER: Yes. If there is softening or rot in the wood planks, I suggest that you use the Rot Fix 2-part liquid epoxy and a syringe-type glue injector to put the mixed liquid into the bottom of the slits. If the cracks are larger, you should consider using the putty-type companion epoxy product, SculpWood. Keep in mind that because these planks are exposed to weather, other parts of the planks may eventually split and rot as result of taking on and retaining water. I have been using epoxy products (these and others) to repair exterior wood surfaces on my 1897 Victorian house. I have a poplar tongue and groove floor on an exposed part of a front porch. Over successive seasons I have been making epoxy repairs (both liquid and putty) to more and more new problem areas. The areas previously repaired with epoxy do not rot, but the all-wood areas next to them can and usually do rot if they don't dry out.
- Reply
- Inaccurate
- JEFF D on Jan 18, 2017
- Purchased on Jul 24, 2015
BEST ANSWER: Yes. If there is softening or rot in the wood planks, I suggest that you use the Rot Fix 2-part liquid epoxy and a syringe-type glue injector to put the mixed liquid into the bottom of the slits. If the cracks are larger, you should consider using the putty-type companion epoxy product, SculpWood. Keep in mind that because these planks are exposed to weather, other parts of the planks may eventually split and rot as result of taking on and retaining water. I have been using epoxy products (these and others) to repair exterior wood surfaces on my 1897 Victorian house. I have a poplar tongue and groove floor on an exposed part of a front porch. Over successive seasons I have been making epoxy repairs (both liquid and putty) to more and more new problem areas. The areas previously repaired with epoxy do not rot, but the all-wood areas next to them can and usually do rot if they don't dry out.
- Reply
- Inaccurate
- JEFF D on Jan 18, 2017
- Purchased on Jul 24, 2015
Not sure what your goal is. This is the liquid version of epoxy that can be used to harden, essentially plasticise, wood, although it doesn't "fill in." To fill in, you use this first and then fill in with solid epoxy Sculpwood; these two work great for rebuilding areas of lost wood due to rot etc. Are you trying to bond planks to eachother in order to stop water from penetrating? What is under the planks- just air, as in this being an open deck, and if so, why would you want to join the planks at all rather than let water just drain through them? If there is structure (as in flat roof) that you are trying to keep water getting down to, I doubt that this liquid will create a seal and I'm not sure what would, including the Sculpwood.
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- Inaccurate
- ROBERT L on Jan 18, 2017
- Purchased on May 31, 2015
I found this product to be quite effective for what I used it. I would be concerned with any filler attempting to fill slits between planks. They tend to move relative to one another such that it is doubtful if any filler would be a permanent fix.
- Reply
- Inaccurate
- Ronald S on Jan 18, 2017
- Purchased on May 22, 2015
I was very happy with how this product soaked in and then cured. You need to seal any holes or split's with tape or something as it will run through before it cures.
- Reply
- Inaccurate
- ROBERT A on Jan 18, 2017
- Purchased on Jul 6, 2015
I do not think this product is flexible enough to use for your application. It dries very hard.
- Reply
- Inaccurate
- Jim L on Jan 18, 2017
- Purchased on May 30, 2015
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I am restoring a rotten window sill. I have a wood epoxy resembling a putty ball for the rotten cavity. I need to saturate beneath the lower part of the cavity. May I use a different more liquid epoxy brand for this task?
James S
on Oct 22, 2015
I used this product , finding it more time consuming in all steps but somewhat successful…instead trying the elmers version which allowed me more room to add and expand it use. Framing the section in allowed me to add wood and plastic shavings to reinforce , even adding mini hand made ray-Bar (misspelled, used i.e. concrete footings ETC> )..layering it in with heated air speeds up the curing and setting …and sealing with a poly before finishing..
R
R
- Reply
- Inaccurate
- Roberto U on Oct 22, 2015
- Purchased on Oct 20, 2014
I am going to op-out of this one. I spent several months between the Rot Fighter mfg. and Rockler trying to get Rockler to get the correct kit from the mfg. I think if you have any concerns your best bet is to talk to the mfg. whose name and address is on the box.
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- Inaccurate
- Milton on Oct 22, 2015
- Purchased on Aug 11, 2014
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Can I use on the underside of my wooden caravan floor. Will it soak in and work upsidown?
Richard H
on Mar 25, 2018
BEST ANSWER: Well probably. It's about the thickness of motor oil when mixed. You might mix a small amount and try a chip brush as an applicator. I'd trim the bristles of the brush down so they're only an inch or inch and a half long and then you're using this as a flexible spatula.
You might do multiple coats versus one larger amount dripping on everything.
You might do multiple coats versus one larger amount dripping on everything.
- Reply
- Inaccurate
- Rachel S on Mar 25, 2018
- Purchased on Jun 23, 2017
BEST ANSWER: Well probably. It's about the thickness of motor oil when mixed. You might mix a small amount and try a chip brush as an applicator. I'd trim the bristles of the brush down so they're only an inch or inch and a half long and then you're using this as a flexible spatula.
You might do multiple coats versus one larger amount dripping on everything.
You might do multiple coats versus one larger amount dripping on everything.
- Reply
- Inaccurate
- Rachel S on Mar 25, 2018
- Purchased on Jun 23, 2017
No, this is quite runny and can only be used on the top side unless some method is used to control it. It is not as thin as water, but will not stat in place.
- Reply
- Inaccurate
- John G on Mar 26, 2018
- Purchased on Jun 1, 2014
No. To thin and will run right out.
- Reply
- Inaccurate
- Claudia P on Mar 25, 2018
- Purchased on Apr 12, 2016
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How many window sill can I fix with one kit?
Brian R
on May 30, 2017
BEST ANSWER: I fixed 2 window sills trim on my front door a large spot on my garage door and had guitar a bit leftover. You should be able to do several window sills. It works great.
- Reply
- Inaccurate
- john m on May 31, 2017
- Purchased on Aug 8, 2015
BEST ANSWER: I fixed 2 window sills trim on my front door a large spot on my garage door and had guitar a bit leftover. You should be able to do several window sills. It works great.
- Reply
- Inaccurate
- john m on May 31, 2017
- Purchased on Aug 8, 2015
That should have said "quite a bit" on my previous response. Auto correction got me.
- Reply
- Inaccurate
- john m on May 31, 2017
- Purchased on Aug 8, 2015
Can vary on the amount of wood that needs to be treated.
- Reply
- Inaccurate
- JAMES H on May 31, 2017
- Purchased on Aug 4, 2015
Vote for the best answer above!
can this product be applied to the entire surface of a turned bowl so it can be sanded?
Vern T
on Mar 18, 2017
BEST ANSWER: Why are you considering an epoxy... Is the bowl rotted? Epoxy is difficult to sand, compared to wood. So you'll spend more time sanding, and any raw wood will be sanded down faster than any patches embedded with epoxy, so you could end up with low spots. Maybe you want to use a filler instead? And if the bowl is for food, you'll need to be concerned about the epoxy's suitability for food contact. (The MSDS sheet downloaded from this site should say something about that I think.)
- Reply
- Inaccurate
- Chris J on Mar 19, 2017
- Purchased on Jul 1, 2015
BEST ANSWER: Why are you considering an epoxy... Is the bowl rotted? Epoxy is difficult to sand, compared to wood. So you'll spend more time sanding, and any raw wood will be sanded down faster than any patches embedded with epoxy, so you could end up with low spots. Maybe you want to use a filler instead? And if the bowl is for food, you'll need to be concerned about the epoxy's suitability for food contact. (The MSDS sheet downloaded from this site should say something about that I think.)
- Reply
- Inaccurate
- Chris J on Mar 19, 2017
- Purchased on Jul 1, 2015
don't see why not. But why? If just protection for a structural turning - fine. If you plan on applying a fine finish, suggest check with manufacturer for compatibility
- Reply
- Inaccurate
- MICHAEL R on Mar 22, 2017
- Purchased on Jul 28, 2015
I suppose, but it would be like using fibreglass resin...why take away the beauty of the wood? What does Rockler recommend?
- Reply
- Inaccurate
- ROBERT L on Mar 20, 2017
- Purchased on May 31, 2015
Vote for the best answer above!
can you get it in larger quanties ?
Dean B
on Dec 20, 2015
BEST ANSWER: Ell Dean ..I am as large as I have ever been (aka : Holiday Hoggin)..and insertion any where is out of the question! But I appreciate the attention !
- Reply
- Inaccurate
- Roberto U on Dec 28, 2015
- Purchased on Oct 20, 2014
BEST ANSWER: Ell Dean ..I am as large as I have ever been (aka : Holiday Hoggin)..and insertion any where is out of the question! But I appreciate the attention !
- Reply
- Inaccurate
- Roberto U on Dec 28, 2015
- Purchased on Oct 20, 2014
Vote for the best answer above!
Is
Zoom
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Is RotFix Wood Restoration and Repair suitable for structeral repairs?
Zoom
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Is RotFix Wood Restoration and Repair suitable for structeral repairs?
James P
on Aug 1, 2015
BEST ANSWER: In my opinion probably not. It is a repair that stops existing wood rot and will restore the shape of existing piece of wood . This product will not be able to carry much weight. Do not know your situation but if repair is of weight bearing material I would try to replace rather than count on this to carry load. Hope this helps.
- Reply
- Inaccurate
- Jim L on Aug 1, 2015
- Purchased on May 30, 2015
BEST ANSWER: In my opinion probably not. It is a repair that stops existing wood rot and will restore the shape of existing piece of wood . This product will not be able to carry much weight. Do not know your situation but if repair is of weight bearing material I would try to replace rather than count on this to carry load. Hope this helps.
- Reply
- Inaccurate
- Jim L on Aug 1, 2015
- Purchased on May 30, 2015
I've used it to repair window and door frames including joints for several years and have not had any break downs. I don't know what type of structure your thinking about, but I have had no problems with it. Hope this helps.
- Reply(1)
- Inaccurate
- Dale C on Aug 1, 2015
- Purchased on Aug 9, 2014
Vote for the best answer above!
Reviews
4.7 / 5.0
6 Reviews
5 Stars
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This works!
It's tricky to figure out how much to mix, so my first time, I mixed way too much; I poured the leftover mix into some kitty litter for disposal. WOW When it had solidified in the litter, it seemed stronger than wood. I think this will fix my rotted spots on my porch extremely well. Do use this before applying SculpWood - another terrific companion product. SculpWood is waterproof and sculpts and sands like a dream. The repairs I made to my porch posts are INVISIBLE, thanks to these products. I even rebuilt the bottom of a baluster with it.
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Dry Rot Repair
I used your product Rotfix and also SculpWood to repair dry rot in a deck door. After removing as much of the dry rot as I could I applied the Rotfix. It hardened and stabilized the remaining wood very well. I used the SculpWood to fill the resulting void. Unfortunately, I ended up a little shy in one place and had to build it up. I tried more SculpWood but found it did not adhere to itself as well as I would have liked. Had to fuss with it a bit. In the end I would caution others to be sure to overfill the material so they don't have to fill in a little to get the patch level. Other than that the two materials did a great job for me. I would certainly recommend them and add that though it was expensive it was well worth it.
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Fixing damaged wood siding and window sills.
Very helpful product. Does what it says. Easy to mix correctly with the kit supplied. Only challenge is that it sets up more quickly in the August heat.
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Epoxy does what the ad said it would,. Soaked in with out big build up. Buy will dated the damaged woods see pics


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Low vis epoxy.
Low viscosity epoxy. The kit works well for large batches but not small ones. I used it to stabilize end grain in weathered wood and it worked well. Viscosity was thicker than description led me to believe
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Great product - works as intended
We have old house (1869), my husband is using this to strengthen and repair basement window frames. His only complaint is knowing how much to mix. I'm not sure you can help him with that.
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You have no obligation to purchase the product once you know the price. You can simply remove the item from your cart.
Our price is lower than the manufacturer's "minimum advertised price." As a result, we cannot show you the price in catalog or the product page.
You have no obligation to purchase the product once you know the price. You can simply remove the item from your cart.
You have no obligation to purchase the product once you know the price. You can simply remove the item from your cart.